Authors / CoAuthors
Lavering, I.H.
Abstract
Seismic exploration throughout the Eromanga Basin has identified several regionally-extensive seismic reflection horizons. The C horizon, at the boundary of the Wallumbilla and Cadna-owie Formations, is one of the most significant. A difference in the petrophysical properties of these two formations is evident from sonic, density, gamma ray and resistivity well log data, and indicates that the amplitude of the C horizon reflection is related to a sequence of low-density (undercompacted) shales in the basal part of the Wallumbilla Formation. The properties of the shales appear to be a consequence of rapid subsidence (undercompaction) and burial. The empirical relationships between the C horizon reflection amplitude, formation density and reflection coefficient are discussed, and geological implications for petroleum prospectiveness of the Eromanga Basin are outlined.
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document
eCat Id
81279
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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Keywords
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- GA PublicationJournal
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- NSWNTQLDSA
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_External
Publication Date
1991-01-01T00:00:00
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geoscientificInformation
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BMR Journal of Australian Geology and Geophysics 12:1:5-12
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